Electrical stop-motion for warping-machine.



PATENTED AUG. s, 1906.

E.. C. BCECHEES. ELECTRICAL s TCP MOTION ECE WAEPINC MACHINES.

' APPLICATION FILED DEOJZ. 1904.

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PATENTBD AUG. s, 1905.

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' Ri C. BCRCHERS.` ELECTRICAL STOP MOTION FOR WARPING MACHINES.

APPLICATION FILED DEO.12. 1904. v

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UNITED STATES PATENT OFFICE.

ELECTRICAL STOP-MOTION FOR WARPlNG-NIAGHINES.

Speccaton of Letters Patent.

Patented Aug. -8, 1905.

Application filed December 12, 1904. Serial No., 236,448.

To @ZZ whom, it may concern:

Beit known that I, RICHARD C. BoRoHERs, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Electrical Stop-Motions for Warping-Machines,of which the following is a speciiication, reference being had to the accompanying drawings.

My invention relates to that class of stopmotions for warping-machines in which the stoppage of the machine (and also, if desired the sounding of asignal) is effected by the making or breaking of an electrical circuit, which occurs whenever any one of the warps are broken.

My present invention relates only to the circuit-closers employed in such stop-motionsthat is, to the mechanism whereby the breaklage of any one of the warp-threads effects the closing of an electrical circuit.v My circuitclosers may be employed with any known type of devices whereby the closing of the circuit eiiects the stoppage of the machine. My cir- .cuitclosers consist of pivoted drop-wires supported in suitable relation to the creels, one for each spool. According to my invention these drop-wires are constructed of novel shape, and the contact which is eected when the drop-wire falls by reason of the breaking of the thread is effected in a novel and highly advantageous way.

In the accompanying drawings, Figure I represents in front elevation a portion of a section of a creel of a warping-machine with my circuit-closers attached. Fig. II represents the same portion in side elevation.

1 1 are uprights carrying suitable bearings 2 2, between which the spools 3 3 3 are carried. In front of each vertical course of spools there is mounted a vertical rail 4:, supporting' the fixed eyes 15, through which the yarn passes after leaving the spool. The rail is made of wood or similar non-conducting material, and the face-which is directed toward the spools has cut into it a vertical groove 5. Attached to the bottom of this groove is a strip 6, of copper tape, the lower end of which communicates by a wire 7 with a battery 8, interposed within the electric circuit, by which the operation of the stop-motion is effected.

At intervals along the strip 6 there are inserted screws 9 or other suitable pivots, electrically connected to the strip 6 and carrying the bifurcated stop-wires 16. Each stop-wire is preferably made of steel wire bent centrally to form an eye, which surrounds the screw-pivot and with the ends diverging, as clearly shown in Fig. I of the drawings. It hangs upon the screw or pivot 9 quite freely, so as to be capable of swinging from side to side, and is of course in'electrical contact with the screw.

' To one side of the rail 4c is attached another strip 10, of copper tape,the lower end of which connects with the wire 11, whereby it is brought into the electrical circuit previously referred to. At intervals along the rail dropwires 12 are pivotally attached by metal pivots or screws 13, which maintain the dropwires in electrical contact with the strip 10. Each drop-wire is preferably shaped as shown in Fig. I-that is to say, it comprises a hori- Zontal portion and two inwardly-inclined arms, each of which terminates in an eye passing around a screw-pivotupon the rail. The lower ends of these armsare bent into parallel relation with each other, so as to loosely embrace the rail, the distance between these parallel ends being less than the distance between the lower ends of the bifurcated stopwires 16.

The vertical relation between the spools, drop-wires, and eyes is such thatwhen the thread from the spool is led directly under the drop-wire and through the eye the tension of the thread holds the drop-wire nearly upright in the position in which the two lower wires appear in the drawings. This is not a position of stable equilibrium by reason of the fact that the projecting front ofthe rail prevents the wire from assuming a position directly over its pivotal supports. The dropwires are prevented when in their upright position from coming into contact with the copper strip 6 by reason of the depth of the groove within which that strip is contained; but when the thread running from any one of the spools breaks the support which the thread previously alforded to the drop-wire ceases and it falls to the position of the upper wire shown in the drawings.

The fall of the drop-wire is checked by the engagement ofY its arms with the stop-wire 16. This engagement is a variable one and yet an unfailing one, as no matter toward which side the stop-wire 16 may hang it is pushed by the fall of the drop-wire into a central position, when'its extending bifurcated arms catch the drop-wire and hold it in substantially the horizontal position shown in the drawings. In

this position the contact between the dropwire 12 and stop-wire 16 closes the circuit between the strip 6 and the strip 10, and thus actuates the stop-motion mechanism. l

It will be understood that the circuit is arranged so that all the circuit-closers are in multiple arc no matter how many spools there may be or how they are arranged.

Having thus described my invention, I

claim- 1. In a stop-motion mechanism for warping-machines, the combination of a normally open electrical circuit by the closure of which the stoppage of the mechanism is effected; and a series of Contact mechanisms interposed in multiple arc within the circuit, one for each spool; said contact mechanisms comprising a pivoted drop-wire and a pivoted stopwire, interposed within the path of the fall of the drop-wire, substantially as set forth.

2. A circuit-closer for an electric stop-motion for a warping-machine comprising a pivoted drop-wire sustained in an unstable posi tion by the thread; and a pivoted stop-wire,

interposed within the path of the fall of the drop-wire, substantially as set forth.

3. A circuit-closer for an electric stop-mo-v tion fora warping-machine comprising a dropwire horizontally pivoted at both ends and RICHARD C. BORCHERS.

Witnesses:

JAMES H. BELL, EVA L. FULLERTON. 

